Matt Grzelcyk, drafted by the Bruins in the 3rd round of the 2012 draft and Boston University star, was named to the US Juniors Team Preliminary Roster today. He's the only Bruins prospect to make the preliminary US roster. For those who don't really follow college hockey, Grzelcyk is having a good year as a freshman. In 13 games he has 2 goals and 9 assists (10 points), including a goal against Boston College last weekend.
Since I love the Juniors tournament, I'll have more (and when the other rosters come out, I'll look for other Bruins prospects). Here's a screenshot of the US roster.